Dose-Response in Radioimmunotherapy of Lymphoma
OBJECTIVES:
Primary
- Determine the relationship between estimated absorbed dose and tumor response using
different dosimetric methodologies in patients with non-Hodgkin's lymphoma treated with
iodine I 131 tositumomab or yttrium Y 90 ibritumomab tiuxetan.
- Determine the relationship between estimated absorbed dose and normal organ toxicity
using different dosimetric methodologies in these patients.
Secondary
- Assess the difference in the dose-response relationship between dosimetric
methodologies in these patients.
- Assess the influence of prior therapy on the dose-response relationship for hematologic
toxicity in these patients.
OUTLINE: Patients are stratified according to planned radioimmunotherapy treatment (iodine I
131 tositumomab vs yttrium Y 90 ibritumomab tiuxetan).
- Stratum 1: Patients receive dosimetric rituximab IV followed by indium In 111 (^111In)
ibritumomab tiuxetan IV over 10 minutes on day 1. Patients undergo positron emission
tomography (PET)/CT scans and single-photon emission computed tomography (SPECT)/CT
scans between 2-24, 48-72, and 90-120 hours after ^111In ibritumomab tiuxetan
administration. Patients who have acceptable biodistribution receive therapeutic
rituximab IV followed by yttrium Y 90 ibritumomab tiuxetan IV over 10 minutes between
days 7-9.
- Stratum 2: Patients receive dosimetric tositumomab IV over 60 minutes followed by
iodine I 131 (^131I) tositumomab IV over 20 minutes on day 0. Patients undergo PET/CT
scans and SPECT/CT scans on days 0; 2, 3 or 4; and 6 or 7. Patients who have acceptable
biodistribution receive therapeutic tositumomab IV over 60 minutes followed by ^131I
tositumomab IV over 20 minutes on approximately day 7.
In both strata, blood is collected at baseline to measure FLT-3 levels. All patients also
undergo a baseline PET/CT scan.
After completion of study treatment, patients are followed every 3 months for 1 year and
then every 6 months thereafter.
PROJECTED ACCRUAL: A total of 88 patients will be accrued for this study.
Interventional
Allocation: Randomized, Intervention Model: Single Group Assignment, Masking: Open Label, Primary Purpose: Treatment
Relationship between estimated absorbed dose and tumor response using different dosimetric methodologies
July '06 to Sept '10
No
George Sgouros, PhD
Principal Investigator
Sidney Kimmel Comprehensive Cancer Center
United States: Institutional Review Board
JHOC-J0636
NCT00416312
July 2006
October 2009
Name | Location |
---|---|
Sidney Kimmel Comprehensive Cancer Center at Johns Hopkins | Baltimore, Maryland 21231-2410 |